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Object IDs in DR1 differ from DR2 and later releases.

DR4: Object 179821077 (SMSS J172718.54-204932.3)

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Data releaseDR4
RA (deg)261.8272
Dec (deg)-20.8257
Galactic lon. (deg)4.6507
Galactic lat. (deg)7.8412
E(B-V) (SFD98) (mag)0.983
E(B-V) (GNILC) (mag)0.903 ± 0.044
Nearest DR4 source 2268053148 (3.6 arcs away)
2nd-nearest DR4 source 179821177 (6.4 arcs away)
3rd-nearest DR4 source 179821176 (7.9 arcs away)
Times observed37
Total bad pixels3
Observing flags3

Magnitudes

Filter u v g r i z
PSF mag. — — 17.844 ± 0.016 16.557 ± 0.012 15.493 ± 0.009 14.880 ± 0.010
Petrosian mag. — — 17.824 ± 0.040 16.574 ± 0.037 15.535 ± 0.013 14.932 ± 0.012

2 x 2 arcmin

Image cutouts

See all image cutouts for this object here.
Images shown are the best images available from DR4, as determined by their coverage and approximate photometric zero-point.

Photometry measurements

Filter Image ID Magnitude (APC05) Flags Exp time (s) Image Quality
(1=best to 3)
g 20140719114908 17.805 ± 0.074 0,0 5 2
g 20140722114132 17.908 ± 0.077 0,0 5 2
g 20140729111106 17.864 ± 0.070 0,0 5 2
g 20160420170043 17.667 ± 0.096 0,0 5 2
g 20180605124544 17.973 ± 0.101 0,0 5 2
g 20190506165109 17.836 ± 0.026 0,0 100 2
g 20190507143127 17.852 ± 0.025 0,0 100 2
g 20210407183532 17.762 ± 0.087 0,0 5 2
r 20140719114939 16.616 ± 0.042 0,0 5 2
r 20140722114203 16.525 ± 0.039 0,0 5 2
r 20140729111131 16.561 ± 0.038 0,0 5 2
r 20160420170109 16.603 ± 0.047 0,0 5 2
r 20190506165309 16.566 ± 0.026 2,0 100 2
r 20190507143327 16.587 ± 0.034 0,0 100 2
r 20200524153415 16.492 ± 0.052 0,0 5 2
r 20210407183558 16.518 ± 0.047 0,0 5 2
i 20140719115004 15.468 ± 0.029 0,0 10 2
i 20140722114229 15.505 ± 0.031 0,0 10 2
i 20140729111202 15.488 ± 0.030 0,0 10 2
i 20150901084153 15.493 ± 0.029 2,0 100 2
i 20150901084554 15.501 ± 0.027 3,0 100 2
i 20160420170134 15.489 ± 0.027 0,0 10 2
i 20180605124636 15.481 ± 0.036 0,0 10 2
i 20190505170526 15.784 ± 0.029 19,0 100 2
i 20190508164002 15.503 ± 0.027 0,0 100 2
i 20190509140533 15.535 ± 0.046 0,0 100 2
i 20200524153441 15.463 ± 0.036 0,0 10 2
i 20210407183626 15.459 ± 0.034 0,0 10 2
z 20140719115035 14.902 ± 0.028 0,0 20 2
z 20140722114259 14.867 ± 0.028 0,0 20 2
z 20140729111235 14.855 ± 0.030 0,0 20 2
z 20150901084353 14.884 ± 0.031 2,0 100 2
z 20150901084754 14.875 ± 0.028 2,0 100 2
z 20160420170204 14.895 ± 0.025 0,3 20 2
z 20180605124707 14.881 ± 0.033 0,0 20 2
z 20190508164202 14.874 ± 0.025 0,0 100 2
z 20190509140733 14.921 ± 0.048 16,0 100 2
z 20200513183957 14.884 ± 0.03 0,0 100 2
z 20200524153511 14.848 ± 0.034 0,0 20 3
z 20210407183658 14.871 ± 0.030 0,0 20 2

Gaia DR3 data
Matching radius: 15"

Best match Second match
Distance (arcsec) 0.08 1.67
GAIA source ID 4121011332353980544 4121011332320175616
Bp mag. 17.569 --
G mag. 16.242 20.657
Rp mag. 15.115 --
Bp/Rp excess 1.402 --
Parallax (mas) 0.179 ± 0.047 -0.881 ± 1.341
PM RA (mas/yr) -4.894 ± 0.058 -1.523 ± 1.998
PM Dec (mas/yr) -5.851 ± 0.040 -4.782 ± 1.168
A.E.N. (mas) 0.0 ± 0.0 2.806 ± 1.409

UV to IR data
Matching radius: 2"

Filter Magnitude1
FUV -- ± --
NUV -- ± --
u -- ± --
g 18.291 ± 0.004
r 16.558 ± 0.002
i 15.654 ± 0.002
z 15.109 ± 0.002
Y -- ± --
J 13.203 ± 0.019
H 12.298 ± 0.02
K 12.025 ± 0.023
W1 11.84 ± 0.011
W2 11.998 ± 0.01
W3 11.942 ± --
W4 8.713 ± --
1Magnitude sources
FUV/NUV: AB mag (calibrated) from GALEX
ugriz: AB mag (Kron) from NOAO Source Catalog
YJHK: Vega mag from VISTA (2" aperture) or 2MASS PSC
W1-W4: Vega mag from CatWISE2020 or AllWISE (profile mag). No error value means the stated value is an upper limit.